【摘 要】
：
Precision Index (PI) of machine/equipment is based on its capability to perform a given task in an accurate manner.It is a worthwhile attribute to compare the performance of different equipment and op
【机 构】
：
Department of Farm Machinery and Power Engineering, Punjab Agricultural University Ludhiana, India
【出 处】
：
The Sixth Asian Conference on Precision Agriculture (第六届亚洲精准
论文部分内容阅读
Precision Index (PI) of machine/equipment is based on its capability to perform a given task in an accurate manner.It is a worthwhile attribute to compare the performance of different equipment and operations to enhance the productivity of a given farm.The purpose of study was to propose an index i.e.Precision Index (PI) for helping the researchers and farmers to select efficient and precise machine/equipment.Precision index values were calculated for three types of machinery namely zero seed curn fertilizer drills, planters and spraying machines.It was concluded that drill Make 2, tested in the year 2004, was having highest precision index value i.e.0.97 or 97% followed by drill Make 1 having PI value 0.95 or 95% tested in the same year.Drill Make 5 tested in the year 2013 was having minimum precision index value i.e.0.80 or 80%.Precision index value for happy seeder machine was 0.88 or 88%.During the testing of multi-crop planter in year 2014, the variability of doubling attribute was more i.e.28% followed by missing having 20% value and produced influence on precision index which was observed to be 0.83 or 83%.Precision index of semi-automatic and automatic potato planter was found to be 0.70 and 0.80, respectively.The value was not much satisfactory and could be rank under average category.Precision index of electrostatic sprayer mounted with single as well as twin nozzle was observed to be highest i.e.0.89 followed by precision index of air assisted sprayer with single and double nozzle i.e.0.83 and 0.84, respectively.
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